Cheapest return flights from San Diego to Denver in April from 48€

AirHint found the following cheapest return flights from San Diego (SAN) to Denver (DEN) in April 2026 (see full year).

Return flights

01 Apr - 05 Apr Frontier Airlines direct
09 Apr - 10 Apr Frontier Airlines direct
09 Apr - 12 Apr Frontier Airlines direct
05 Apr - 08 Apr Frontier Airlines direct
13 Apr - 20 Apr Frontier Airlines direct
09 Apr - 16 Apr Frontier Airlines direct
03 Apr - 08 Apr Alaska Airlines direct
08 Apr - 15 Apr Frontier Airlines direct
12 Apr - 19 Apr Frontier Airlines direct
10 Apr - 12 Apr Frontier Airlines direct
28 Apr - 05 May Alaska Airlines direct

Also check the deals for one-way flights from San Diego to Denver in April.

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